True trace gauge

Abstract

A carpet scribing device and gauge for measuring the size of a carpet module adjoining a baseboard. The device comprises a rod on which is slidably mounted a block encased in a bracket having a dependent portion which abuts against the edge of laid carpeting. The end of the rod which abuts against the floor board is provided with a needle extending angularly downwardly with its point in vertical alignment with said end of the rod. By reversal of the block on the rod, the device is useful for carpeting stairs.

I claim: 
     
       1. A modular carpet tile scribing device for scribing the rear of a carpet tile, comprising an elongated rod having, at one end, a hardened scribing needle extending angularly downwardly about 45° from the axis of the rod with its point in vertical alignment with said one end of the rod and constituting the sole scribing element, a block having an opening through which said rod is slidably mounted, a casing for said block having a vertically downwardly extending edge plate for abutting against the edge of laid carpet tile, and a screw for tightly clamping the block to said casing after said one end of the rod is abutted against a baseboard. 
     
     
       2. A carpet tile scribing device as recited in claim 1 wherein said screw is threaded to said block through its entire height and having a head for turning it, said casing having inwardly turned top portions serving as a stop for said block.